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acu·le·us | \ ə-ˈkyü-lē-əs \
plural aculei\ ə-ˈkyü-lē-ˌī \
Definition of aculeus
zoology
: a sharp-pointed process specifically : an insect's ovipositor especially when modified into a sting
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Time Traveler for aculeus
The first known use of aculeus was in 1702
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